LdexpReg.h

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// LdexpReg.h:
// -------------------
//

#ifndef __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_LDEXPREG_H__
#define __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_COMMON_LDEXPREG_H__

#include <IPSDKUtil/IPSDKUtilExports.h>
#include <IPSDKUtil/InstructionSet/RegType.h>
#include <IPSDKUtil/InstructionSet/detail/AssignReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/AddReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/MaxReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/MinReg.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/MulReg.h>
#include <IPSDKUtil/InstructionSet/Logical/detail/ShiftLeftReg.h>
#include <IPSDKUtil/InstructionSet/detail/BitwiseCastReg.h>
#include <IPSDKUtil/Tools/ForceInline.h>

namespace ipsdk {
namespace simd {
namespace detail {


template <eInstructionSet::domain IS>
struct LdexpReg<IS, ipReal32>
{
    static IPSDK_FORCEINLINE
    typename RegType<IS, ipReal32>::Type
    act(const typename RegType<IS, ipReal32>::Type& x,
        const typename RegType<IS, ipInt32>::Type& exp)
    {
        typename RegType<IS, ipReal32>::Type out;
        act(x, exp, out);
        return out;
    }


    static IPSDK_FORCEINLINE
    void
    act(const typename RegType<IS, ipReal32>::Type& x,
        const typename RegType<IS, ipInt32>::Type& exp,
        typename RegType<IS, ipReal32>::Type& out)
    {
        typedef typename RegType<IS, ipReal32>::Type Reg;
        typedef typename RegType<IS, ipInt32>::Type RegInt32;
        
        RegInt32 regM126, reg127;
        AssignReg<IS, ipInt32>::act(regM126, -126);
        AssignReg<IS, ipInt32>::act(reg127, 127);
        RegInt32 newExp;
        MaxReg<IS, ipInt32>::act(exp, regM126, newExp);
        MinReg<IS, ipInt32>::act(newExp, reg127, newExp);
        AddReg<IS, ipInt32>::act(newExp, reg127, newExp);
        ShiftLeftReg<IS, ipInt32>::act(newExp, 23, newExp);
        Reg newExpReal32;
        BitwiseCastReg<IS, ipInt32, ipReal32>::act(newExp, newExpReal32);
        MulReg<IS, ipReal32>::act(x, newExpReal32, out);
        
    }
};


} // end of namespace detail
} // end of namespace simd
} // end of namespace ipsdk

#endif // __IPSDKUTIL_INSTRUCTIONSET_ARITHMETIC_DETAIL_SSE2_POWREG_H__